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A019236 as a simple table

n a(n)
3 0
4 1
5 4
6 1
7 12
8 30
9 54
10 102
11 228
12 618
13 1312
14 3096
15 8292
16 19498
17 48300
18 129176
19 329812
20 848460
21 2237742
22 5845522
23 15289132
24 40319114
25 106323626
26 280556746
27 742462698
28 1968747002
29 5228567482
30 13911482218
31 37084483104

[0,1,4,1,12,30,54,102,228,618,1312,3096,8292,
 19498,48300,129176,329812,848460,2237742,5845522,
 15289132,40319114,106323626,280556746,742462698,
 1968747002,5228567482,13911482218,37084483104]

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Last modified August 12 13:59 EDT 2022. Contains 356077 sequences. (Running on oeis4.)